That means that there is constant air flow inside the diner even when the doesn’t need to turn on to maintain the temperature setting on the thermostat.
Even after diners in my state were reopened during the worst phase of the pandemic, I refused to eat out. The number of infections was still high and my doctor was easily blunt with myself and others about the risks. He said that people have no option however to unconnect their masks when they eat. Even if every man walked in with a mask on and reaffixed them after every single bite, it would still result in respiratory particles getting into the air on a hour by hour basis. He said it was one of the highest risk locations for COVID transmission. I was never the most notorious man for eating out at diners, however I still loved doing it with my friends every once in a while. Out of an abundance of caution, I quit going altogether a year ago. Now I am put at ease knowing that some of my favorite local eateries have since vastly improved their ventilation systems. Some have bought massive air duct with large s that have fans running always. That means that there is constant air flow inside the diner even when the doesn’t need to turn on to maintain the temperature setting on the thermostat. Having this steady air modern moving at all times vastly reduces the risk of an infected man making multiple customers and staff members sick if they come inside and kneel down for an entire meal. Instead, those hypothetical viral particles will get collected by the HEPA filter inside the diner’s Between HEPA filters and UV lights, these modern Heating plus A/C systems are well equipped for airborne viruses.